Vtol experts need help

What vtol gives best Flight time
weight is not the limit can go up to 10-12 kg
don’t trust Make fly easy manual that says FIghter or Hero has 11.5 kg Max take-off capacity

Fighter can go up that high - I have seen it myself personally and in many YouTube videos.

Flight at 11KG.

Check out Foxtech different models.

Good luck.